PCIe and Graphics

PCI Express Settings

PCI Express Settings firmware setup page decoded from AMI HII/IFR resources.

Form ID: 0x286e
Records: 10
Parents: PCI Subsystem Settings
Path: Setup / Advanced / PCI Subsystem Settings / PCI Express Settings / Setup / Advanced / Advanced / PCI Subsystem Settings / PCI Express Settings

Record 1677

Relaxed Ordering

Firmware Value

Enables or Disables PCI Express Device Relaxed Ordering.

Form: PCI Express Settings
Opcode: OneOf
Question ID: 0x5f7
VarStore: Setup
VarStore GUID: EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset: 0xce1
Width: 1 byte(s)
Range: 0 to 1 step 0

Value	Label	Markers
`0`	Disabled
`1`	Enabled

Default store records

Store ID	Store label	Value	Option label
`0`	Standard	`1`	Enabled
`1`	Manufacturing	`1`	Enabled

Visibility / conditions

{"condition_id": 742, "type": "GrayOutIf", "offset": 389085, "expr": ["EqIdVal QuestionId: 0x1186, Value: 0x1"]}

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Record 1678

Extended Tag

Firmware Value

If ENABLED allows Device to use 8-bit Tag field as a requester.

Form: PCI Express Settings
Opcode: OneOf
Question ID: 0x5f8
VarStore: Setup
VarStore GUID: EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset: 0xce2
Width: 1 byte(s)
Range: 0 to 1 step 0

Value	Label	Markers
`0`	Disabled
`1`	Enabled

Default store records

Store ID	Store label	Value	Option label
`0`	Standard	`0`	Disabled
`1`	Manufacturing	`0`	Disabled

Visibility / conditions

{"condition_id": 743, "type": "GrayOutIf", "offset": 389140, "expr": ["EqIdVal QuestionId: 0x1186, Value: 0x1"]}

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Record 1679

No Snoop

Firmware Value

Enables or Disables PCI Express Device No Snoop option.

Form: PCI Express Settings
Opcode: OneOf
Question ID: 0x5f9
VarStore: Setup
VarStore GUID: EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset: 0xce3
Width: 1 byte(s)
Range: 0 to 1 step 0

Value	Label	Markers
`0`	Disabled
`1`	Enabled

Default store records

Store ID	Store label	Value	Option label
`0`	Standard	`1`	Enabled
`1`	Manufacturing	`1`	Enabled

Visibility / conditions

{"condition_id": 744, "type": "GrayOutIf", "offset": 389195, "expr": ["EqIdVal QuestionId: 0x1186, Value: 0x1"]}

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Record 1680

Maximum Payload

Firmware Value

Set Maximum Payload of PCI Express Device or allow System BIOS to select the value.

Form: PCI Express Settings
Opcode: OneOf
Question ID: 0x5fa
VarStore: Setup
VarStore GUID: EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset: 0xce4
Width: 1 byte(s)
Range: 0 to 55 step 0

Value	Label	Markers
`55`	Auto	Standard defaultManufacturing default
`0`	128 Bytes
`1`	256 Bytes
`2`	512 Bytes
`3`	1024 Bytes
`4`	2048 Bytes
`5`	4096 Bytes

Visibility / conditions

{"condition_id": 745, "type": "GrayOutIf", "offset": 389250, "expr": ["EqIdVal QuestionId: 0x1186, Value: 0x1"]}

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Record 1681

Maximum Read Request

Firmware Value

Set Maximum Read Request Size of PCI Express Device or allow System BIOS to select the value.

Form: PCI Express Settings
Opcode: OneOf
Question ID: 0x5fb
VarStore: Setup
VarStore GUID: EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset: 0xce5
Width: 1 byte(s)
Range: 0 to 55 step 0

Value	Label	Markers
`55`	Auto	Standard defaultManufacturing default
`0`	128 Bytes
`1`	256 Bytes
`2`	512 Bytes
`3`	1024 Bytes
`4`	2048 Bytes
`5`	4096 Bytes

Visibility / conditions

{"condition_id": 746, "type": "GrayOutIf", "offset": 389328, "expr": ["EqIdVal QuestionId: 0x1186, Value: 0x1"]}

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Record 1682

ASPM Support

Observed

Set the ASPM Level: Force L0s - Force all links to L0s State AUTO - BIOS auto configure DISABLE - Disables ASPM

Firmware help text

Set the ASPM Level: Force L0s - Force all links to L0s State AUTO - BIOS auto configure DISABLE - Disables ASPM

Form: PCI Express Settings
Opcode: OneOf
Question ID: 0x5fc
VarStore: Setup
VarStore GUID: EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset: 0xce6
Width: 1 byte(s)
Range: 0 to 55 step 0
Observed value: 0
Observed label: Disabled
Observed date: 2026-10-14T03:10:49.661810+00:00
Observed source: selected-live-settings.json

Value	Label	Markers
`0`	Disabled	Standard defaultManufacturing default
`55`	Auto
`1`	Force L0s

Visibility / conditions

{"condition_id": 747, "type": "GrayOutIf", "offset": 389424, "expr": ["EqIdVal QuestionId: 0x1186, Value: 0x1"]}

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Record 1683

Extended Synch

Firmware Value

If ENABLED allows generation of Extended Synchronization patterns.

Form: PCI Express Settings
Opcode: OneOf
Question ID: 0x5fd
VarStore: Setup
VarStore GUID: EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset: 0xce7
Width: 1 byte(s)
Range: 0 to 1 step 0

Value	Label	Markers
`0`	Disabled
`1`	Enabled

Default store records

Store ID	Store label	Value	Option label
`0`	Standard	`0`	Disabled
`1`	Manufacturing	`0`	Disabled

Visibility / conditions

{"condition_id": 748, "type": "GrayOutIf", "offset": 389492, "expr": ["EqIdVal QuestionId: 0x1186, Value: 0x1"]}

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Record 1684

Link Training Retry

Observed

Defines number of Retry Attempts software will take to retrain the link if previous training attempt was unsuccessful.

Form: PCI Express Settings
Opcode: OneOf
Question ID: 0x5fe
VarStore: Setup
VarStore GUID: EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset: 0xce8
Width: 1 byte(s)
Range: 0 to 5 step 0
Observed value: 5
Observed label: 5
Observed date: 2026-10-14T03:10:49.661810+00:00
Observed source: selected-live-settings.json

Value	Label	Markers
`0`	Disabled
`2`	2
`3`	3
`5`	5	Standard defaultManufacturing default

Visibility / conditions

{"condition_id": 749, "type": "GrayOutIf", "offset": 389556, "expr": ["EqIdVal QuestionId: 0x1186, Value: 0x1"]}

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Record 1685

Link Training Timeout (uS)

Observed

Defines number of Microseconds software will wait before polling 'Link Training' bit in Link Status register.

Firmware help text

Defines number of Microseconds software will wait before polling 'Link Training' bit in Link Status register. Value range from 10 to 10000 uS.

Form: PCI Express Settings
Opcode: Numeric
Question ID: 0x5ff
VarStore: Setup
VarStore GUID: EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset: 0xce9
Width: 2 byte(s)
Range: 10 to 10000 step 10
Observed value: 1000
Observed date: 2026-10-14T03:10:49.661810+00:00
Observed source: selected-live-settings.json

Default store records

Store ID	Store label	Value	Option label
`0`	Standard	`1000`
`1`	Manufacturing	`1000`

Visibility / conditions

{"condition_id": 750, "type": "GrayOutIf", "offset": 389613, "expr": ["EqIdVal QuestionId: 0x1186, Value: 0x1"]}

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Record 1686

Unpopulated Links

Observed

In order to save power, software will disable unpopulated PCI Express links, if this option set to 'Disable Link'.

Form: PCI Express Settings
Opcode: OneOf
Question ID: 0x600
VarStore: Setup
VarStore GUID: EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset: 0xceb
Width: 1 byte(s)
Range: 0 to 1 step 0
Observed value: 0
Observed label: Keep Link ON
Observed date: 2026-10-14T03:10:49.661810+00:00
Observed source: selected-live-settings.json

Value	Label	Markers
`0`	Keep Link ON
`1`	Disable Link

Default store records

Store ID	Store label	Value	Option label
`0`	Standard	`0`	Keep Link ON
`1`	Manufacturing	`0`	Keep Link ON

Visibility / conditions

{"condition_id": 751, "type": "GrayOutIf", "offset": 389659, "expr": ["EqIdVal QuestionId: 0x1186, Value: 0x1"]}

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